What year did 4L80E change?

What year did 4L80E change?

In 2006, with the introduction of the landmark and innovative upstart, the 6L80 6-speed transmission, the 4L80 began to be replaced in several applications, which was, doubtless, GM engineers’ ultimate intention.

What does a 4L80E transmission fit?

Also, the 4L80E performance transmission was designed for cars up to 16,500 lbs GVWR with towing capacity up to 22,000 LBS, and whose engine is up to 440 ft. Some cars that used the 4L80E transmission include Chevrolet/GMC pickups, commercial vehicles, and vans. It was also adopted in Rolls Royce and Bentley vehicles.

What all is needed for a 4L80E swap?

In almost every case, you will need to build (or buy) a new transmission crossmember, a new torque converter, a set of transmission lines, a modified or swap harness, and a modified driveshaft with a larger yoke and crossover U-joint.

How do I identify a 4L80E transmission?

With all GM longitudinal transmissions, it is far and away easiest to identify them by the amount of bolts on the transmission pan. Only the TH350 and TH400 share the same number of bolts. So if you count the bolts and get 17 you can be sure that you have identified the 4L80E transmission.

Does a 4L80 need a computer?

The only logical transmission for our 4×4 was the 4L80E four-speed automatic transmission commonly found in 3/4- and 1-ton GM trucks and SUVs. The only downfall of this swap is that the 4L80E is an electronic transmission that generally requires an additional computer and wiring harness to operate properly.

Can you put a 4L80E on 350?

The 4l80e will bolt up to your existing flywheel using 3 bolts instead of 6. The jury is still out on this one as the 4l80 came with 6 but 350 and 400 only ever used 3. I ran 3 in my turbo truck setup without issues.

Can a 91-93 be swapped for a 4L80E?

And the PWM solonoid can be swapped from a 91-93 into a newer model and allow the use of most any of the 94+ 4L80E/4L85E into a 91-93 truck. As for the torque converter, there are said to be 3 stock models. Low, Medium, and high stall models.

What’s the difference between early and late model 4L80E transmissions?

The early model case does not have a top bolt hole which will bolt up to 5.7 to 350 engines. Later models featured a top bolt hole to bolt up to LS engines. Early models also have a short linkage shaft and the NSS was in the shift console while the later 4L80’s had an NSS on the transmission and a longer linkage shaft.

What kind of clutch does a 4L80E use?

A torque con- verter clutch automatically engages at cruising speeds to improve fuel efficiency. Unlike hydraulically controlled automatic transmissions, the 4L80-E transmission uses electrical sig- nals to specific gear shift solenoids which produce smooth shifts and quiet operation.

Do you need a transmission controller for a GM 4L80?

Engine Compatibility While the 4L80 is generally mechanically compatible with Chevrolet style GM engines, it does require a transmission controller. That controller may be the factory-integrated with the PCM as on 1991-1999 TBI & Gen II engines, with the 1999-2007 Gen III engines, or the 2007+ Gen IV engines.